Eaton CHQ245 Thermal Magnetic Circuit Breaker - UL 489
Part Number: CHQ245
Quick Summary
The Eaton CHQ245 is a classified 3/4-inch thermal magnetic circuit breaker for CH LoadCenters. Engineers face space constraints and protection coordination challenges during panel upgrades. UL 489 certification ensures code-compliant protection, and this unit serves as a reliable replacement for Square D QO breakers. Compatible with Type CH LoadCenters and featuring two-pole common trip, it helps reduce downtime and maintenance costs for residential and light commercial panels.
Product Information
Extended Description
CHQ245 Eaton: 3/4" Thermal magnetic circuit breakers,Type CHQ 3/4-Inch classified replacement breaker clamshell pack,45 A,10 kAIC,Two-pole,120/240V,CHQ,Common breaker trip,(1) #14-8 AWG, (2) #14-10 AWG Cu/Al,Q30,CHQ,Type CH Loadcenters
Product Name
Eaton Classified 3/4" thermal magnetic circuit breaker
Catalog Number
CHQ245
UPC
782113010953
Product Length/Depth
2.5 in
Product Height
3 in
Product Width
1.5 in
Product Weight
0.6 lb
Warranty
Limited lifetime residential, 1 year commercial
Certifications
UL 489
Catalog Notes
Replacement for Square D Type QO Breakers. Requires two 3/4-inch (19.1 mm) spaces.
Used with
Type CH Loadcenters
Type
Type CHQ 3/4-Inch classified replacement breaker clamshell pack
Special features
Clamshell pack
Amperage Rating
45 A
Voltage rating
120/240 V
Trip Type
Common breaker trip
Circuit breaker type
CH
Interrupt rating
10 kAIC
Main circuit breaker
CHQ
Wire size
(2) #14-10 AWG Cu/Al (1) #14-8 AWG
Number of poles
Two-pole
Quantity
30
Standard circuit breaker catalog numbers - 5651B63SH09
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
Eaton Specification Sheet - CHQ245
Feature: Clamshell-pack CHQ245 replacement breaker. Business Impact: simplifies handling, stocking, and field replacements, reducing mis-orders and downtime. Application: ideal for CH LoadCenters where fast, accurate swaps are critical. Feature: Two-pole, common trip design. Business Impact: coordinated protection across both poles minimizes nuisance trips and improves panel safety. Application: residential and light commercial panels requiring reliable dual-pole protection. Feature: 45 A, 120/240 V rating. Business Impact: matches typical branch circuit and feeder requirements, enabling compliant sizing and efficient wiring. Application: common residential circuits and light commercial feeders in CH LoadCenters. Feature: 10 kAIC interrupt rating. Business Impact: higher fault-current protection reduces equipment damage and downtime. Application: panels with moderate to high fault current potential. Feature: Wire size capacity (2) #14-10 Cu/Al and (1) #14-8 AWG. Business Impact: flexible wiring options streamline installation and facilitate field upgrades. Application: typical CH LoadCenter wiring scenarios. Feature: UL 489 certification. Business Impact: ensures code compliance and system reliability. Application: regulated installations in residential and light commercial settings.
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FAQs
Yes. CHQ245 is designed as a classified replacement for Square D QO breakers and is used with Eaton Type CH LoadCenters. It requires two 3/4-inch spaces and uses a two-pole design with a common trip, simplifying cross-brand panel upgrades and minimizing field modifications.
CHQ245 is rated at 45 A with a 120/240 V supply and an interrupt rating of 10 kAIC. This combination supports typical residential and light commercial circuits while offering robust fault-current protection for CH LoadCenters.
CHQ245 excels in residential and light commercial environments that utilize Eaton CH LoadCenters. It is suitable for two-pole protection in standard branch circuits and feeders, particularly where replacement or cross-compatibility with Square D QO is needed.
CHQ245 is UL 489 listed, ensuring compliance with recognized safety standards for low-voltage circuit breakers. This certification supports code-compliant installations, reliable protection coordination, and passing inspections in both new builds and retrofit projects.
The clamshell-pack design facilitates faster replacements and easier inventory management, reducing field service time. Its robust UL 489 rating, common-trip two-pole protection, and compatible wiring options help minimize downtime and extend panel life, delivering a favorable return on investment for contractors and facility operators.